Reaction between benzaldehyde and acetophenone in presence of dilute NaOH is known asNEET 2020 (Phase 1)

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Cross aldol condensation reaction:

A few steps take place in this reaction

Step 1: Acid-base reaction occurs between base and alpha hydrogen of acetophenone, and carbanion is formed.

Step 2: In this step, formed carbanion behaves as a nucleophile and attacks carbonyl compound (benzaldehyde) carbon to form beta-hydroxy carbonyl compound.

Step 3: $α, β$ -unsaturated carbonyl compound is formed as a product after heating.

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